William g



f Unirse detener Garros@ VILLIAM G. JOER'KE OF NEE? YORK, N. Y.

LARM.

SPECIPIGATQN forming part of Lettersatent No. 373.0173, dated Novernbe:l15, 18S?.

Application died March 3, LSrlV .and it consists in the detailedconstruction,

Y, combination, and arrangement of the parts,

substantially as hereinafter fully set forth, and particulariy pointedout in the claims.

In the accompanying drawing, 'the figure is a longitudinal sectionalelevation ot' my invention, showing diagrammatieally an annunciator,battery, and electric circuit.

means for indicating or giving aiarm when gas is escaping from a gasburner or xture by reason or" the light having been inadvertentlyextinguished while the turning-plug is open; and to this end I employ-anapproximately in\ferted-Lshaped tube or pipe,A, se-

cured in close proximity to the gas burner or fixture, so as to causethe upper shorter vertical end thcreofto be on aline with the burnerproper. Over suitable pulleys, a c, in this Lshaped tube or pipe ispassed a rope or cable, a', which at one end is connected with algrammatically in the accon'ipanying drawing.) This bar t1 projects outthrough the lower open end of the short vertical portion ofthe tube orpipe, and has rigidly secured to its lower end a semi spherical chamber,(l,

Vopen at its lower end, and designed in prac! y tice to occupy positiona short distance above the gas-dame, as shown. Vv'hcn the. gas isburning, this semispherical chamber i'crms -a shade therefor; lbuttheprincipal office et this chamber is called into operation when the lightis accidentally extinguished and the gas in escaping ascends to andfills the said chamber, which will cause the connecting-bar t to moveupwardly and the weight B t0 dev scend, the cord or cable thereof movingover the pulleys' secured in the tube or pipe.

In the bottom of the tube or pipe A is disposed a small piece of metahe,with which is connected one end of an electric wire, b", the other endoi' which connects with an annun ciator or other alarm in the office ofthe hotel or building Where my invention is located, causing the ringingofa bell when the weight descends and strikes the-piece of metal e, andthus close the electric circuit, whereby alarm is given of the escapeofthe gas,and means can at once be employed to prevent-what mightotherwise prove a serious accident.l p v VW p Ttw'iiI'heundrstocd-t'hatthe weight Band contact e form terminals of an electric circuit,including an annunciator and battery.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

l. The herein-described indicator or alarm,

pipe, the weight, the cord or cable, the connecting-bar, thesemi-spherical chamber, and the electrical wire, all arranged to operatesubstantially as shown and described.

' 2. rlibe means herein described of giving alarm of escaping gas,consisting of a semi'- "consisting of the inverted-L-shaped tube or,v

spherical chamber, a connecting-bar, and a weight connected by a cord orcable to said berend a contactpiece below said weight, saidcontact-piece and weight forming terminals of an electric circuit,including a battery and annnnciator, substantially as set forth.

3. The combination, with the L-shaped tube WM. G. JOERKE. Witnesses:

Q. von SonnLiHA, WILLY HEINZ.

